A Terrible Reaction

Travel to the province of Sirocco Nord and head to the mission marker located in a ruins. After the scenes, you'll have to destroy the tanks pounding the city. You can commandeer one of the tanks and use it to destroy the others. Once done, plant explosives on the tank you commandeered and destroy it to update your objective.

Taste of their own shells

Once done, head to Mario's position and clear all enemies in the police station. After a while, paratroopers will be dropped overhead. Kill them all until you get an update. Next, tether the fallen gate to raise it and allow your getaway car to enter.

An enemy chopper will pursue. It's recommended to grapple to that chopper and take the controls so you can properly escort Mario in the air. As you encounter more ground and air forces, concentrate on taking out Mario's pursuers and commandeer a different chopper or tank if necessary.

As you make your way to the bridge leading to another province, you'll have to shoot a truck carrying explosives to destroy the bridge and cut off the majority of your attacks. Continue protecting Mario until he reaches the getaway chopper. Once done, the mission will be complete and you have the choice to continue fighting the remnants of the pursuers or leave the area to lose heat.

The great escape